/* ============================================================
   DAN NAUKE I ROBOTIKE — styles.css
   Hero: tamno | Ostalo: svjetlo | CTA+Footer: tamno
============================================================ */

:root {
  --purple:      #7c3aed;
  --purple-h:    #6d28d9;
  --purple-light:#a78bfa;
  --purple-glow: rgba(124,58,237,0.3);
  --dark:        #04051a;
  --dark2:       #080b24;
  --light:       #ffffff;
  --light-alt:   #f7f8fc;
  --text:        #0f172a;
  --sub:         #475569;
  --muted:       #94a3b8;
  --line:        #e2e8f0;
}

* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:'Inter',sans-serif; overflow-x:hidden; -webkit-font-smoothing:antialiased; background:#fff; color:var(--text); }

/* ============================================================ PROGRESS */
#progress-bar {
  position:fixed; top:0; left:0; height:2px; z-index:10000;
  background:linear-gradient(90deg,#60a5fa,var(--purple));
  transform-origin:left; transform:scaleX(0); transition:transform 0.1s;
}

/* ============================================================ NAV */
nav {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  padding:18px 48px; transition:all 0.35s;
}
nav.scrolled {
  background:rgba(255,255,255,0.96); backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line); padding:11px 48px;
  box-shadow:0 2px 14px rgba(0,0,0,0.06);
}

.nav-inner {
  max-width:1320px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between; gap:20px;
}

.nav-logo-wrap { display:flex; align-items:center; gap:10px; text-decoration:none; }
.nav-logo-text  { display:flex; flex-direction:column; line-height:1.2; }
.logo-line1     { font-size:0.8rem; font-weight:800; letter-spacing:0.08em; color:#fff; transition:color 0.3s; }
.logo-line2     { font-size:0.72rem; font-weight:600; letter-spacing:0.05em; color:#fff; transition:color 0.3s; }
.logo-purple    { color:var(--purple-light); }

nav.scrolled .logo-line1 { color:var(--text); }
nav.scrolled .logo-line2 { color:var(--sub); }
nav.scrolled .logo-purple { color:var(--purple); }
nav.scrolled .nav-atom ellipse,
nav.scrolled .nav-atom circle { stroke:var(--purple); fill:var(--purple); }

.nav-links { display:flex; align-items:center; gap:28px; }
.nav-link {
  font-size:0.82rem; font-weight:500; color:rgba(255,255,255,0.75);
  text-decoration:none; transition:color 0.25s; position:relative; padding-bottom:3px;
}
.nav-link::after {
  content:''; position:absolute; bottom:0; left:0; right:0;
  height:1.5px; background:currentColor;
  transform:scaleX(0); transform-origin:left; transition:transform 0.25s;
}
.nav-link:hover, .nav-link.active { color:#fff; }
.nav-link:hover::after, .nav-link.active::after { transform:scaleX(1); }

nav.scrolled .nav-link       { color:var(--sub); }
nav.scrolled .nav-link:hover,
nav.scrolled .nav-link.active { color:var(--text); }

.btn-nav {
  background:var(--purple); color:#fff;
  font-size:0.72rem; font-weight:700; letter-spacing:0.08em;
  padding:11px 22px; border-radius:6px; border:none; cursor:pointer; transition:all 0.25s;
}
.btn-nav:hover { background:var(--purple-h); box-shadow:0 4px 18px var(--purple-glow); transform:translateY(-1px); }

.mob-btn { display:none; background:none; border:none; color:#fff; cursor:pointer; }
nav.scrolled .mob-btn { color:var(--text); }

/* mobile menu */
.mobile-menu {
  position:fixed; inset:0; background:rgba(4,5,26,0.97);
  backdrop-filter:blur(16px); z-index:999;
  display:none; flex-direction:column; align-items:center; justify-content:center; gap:24px;
}
.mobile-menu.open { display:flex; }
.mob-close { position:absolute; top:20px; right:24px; background:none; border:none; color:#fff; font-size:1.4rem; cursor:pointer; }
.mob-link  { color:rgba(255,255,255,0.8); font-size:1.1rem; font-weight:600; letter-spacing:0.12em; text-decoration:none; }
.mob-link:hover { color:var(--purple-light); }

/* ============================================================ HERO (TAMNO) */
#hero {
  position:relative; min-height:100vh;
  display:flex; align-items:center;
  background:var(--dark); overflow:hidden; padding-top:80px;
}

#hero-vid {
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; opacity:0.4;
}

.hero-overlay {
  position:absolute; inset:0;
  background:linear-gradient(to right, rgba(4,5,26,0.30) 50%, rgba(4,5,26,0.3) 100%);
}

#particles-canvas { position:absolute; inset:0; pointer-events:none; z-index:1; }

.hero-inner {
  position:relative; z-index:2;
  max-width:1320px; margin:0 auto; padding:60px 48px;
  width:100%; max-width:700px; margin-left:max(48px, calc(50vw - 660px));
}

.hero-loc {
  display:inline-flex; align-items:center; gap:6px;
  font-size:0.72rem; font-weight:600; letter-spacing:0.18em;
  color:rgba(255,255,255,0.55); margin-bottom:20px;
}

.hero-h1 {
  display:flex; flex-direction:column; font-weight:900;
  line-height:1.0; letter-spacing:-0.02em; margin-bottom:20px;
}
.h1-white  { font-size:clamp(3rem,7vw,5.5rem); color:#fff; display:block; }
.h1-row2   { font-size:clamp(2.8rem,6.5vw,5.2rem); color:#fff; display:block; }
.h1-purple { color:var(--purple-light); }

.hero-sub {
  font-size:1.05rem; color:rgba(255,255,255,0.65);
  line-height:1.7; margin-bottom:24px; font-weight:400;
}

.hero-meta {
  display:flex; gap:24px; flex-wrap:wrap; margin-bottom:32px;
}
.hmeta-item {
  display:flex; align-items:center; gap:6px;
  font-size:0.72rem; font-weight:600; letter-spacing:0.12em;
  color:rgba(255,255,255,0.5);
}

.hero-btns { display:flex; align-items:center; gap:12px; flex-wrap:wrap; }

.btn-solid {
  background:var(--purple); color:#fff;
  font-size:0.74rem; font-weight:700; letter-spacing:0.08em;
  padding:14px 26px; border-radius:6px; border:none; cursor:pointer; transition:all 0.25s;
}
.btn-solid:hover { background:var(--purple-h); box-shadow:0 6px 24px var(--purple-glow); transform:translateY(-2px); }

.btn-outline-hero {
  background:rgba(255,255,255,0.08); color:#fff;
  font-size:0.74rem; font-weight:600; letter-spacing:0.08em;
  padding:13px 26px; border-radius:6px;
  border:1.5px solid rgba(255,255,255,0.25); cursor:pointer; transition:all 0.25s;
}
.btn-outline-hero:hover { border-color:rgba(255,255,255,0.6); background:rgba(255,255,255,0.12); transform:translateY(-2px); }

.btn-video {
  display:inline-flex; align-items:center; gap:10px;
  background:none; border:none; color:rgba(255,255,255,0.7);
  font-size:0.72rem; font-weight:600; letter-spacing:0.1em; cursor:pointer; transition:color 0.25s;
}
.btn-video:hover { color:#fff; }
.play-circle {
  width:36px; height:36px; border-radius:50%;
  border:1.5px solid rgba(255,255,255,0.4);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0; transition:border-color 0.25s;
}
.btn-video:hover .play-circle { border-color:#fff; }

/* ============================================================ LIGHT SECTIONS */
.sec-white   { background:var(--light); }
.sec-light   { background:var(--light-alt); }

.wrap { max-width:1320px; margin:0 auto; padding:80px 48px; }

.sec-label {
  display:block; font-size:0.68rem; font-weight:700; letter-spacing:0.22em;
  color:var(--purple); margin-bottom:14px;
}
.text-purple { color:var(--purple); }
.sec-center-title {
  font-size:0.8rem; font-weight:700; letter-spacing:0.2em;
  color:var(--sub); text-align:center; margin-bottom:48px;
}
.body-text { font-size:0.93rem; color:var(--sub); line-height:1.8; }
.mt-4 { margin-top:16px; }
.saznaj-link {
  display:inline-block; margin-top:28px;
  font-size:0.78rem; font-weight:700; letter-spacing:0.1em;
  color:var(--purple); text-decoration:none; border-bottom:1.5px solid var(--purple);
  padding-bottom:2px; transition:opacity 0.2s;
}
.saznaj-link:hover { opacity:0.7; }

/* ============================================================ MISIJA */
.mission-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:center; }
.mission-img-wrap { position:relative; }
.mission-img { width:100%; border-radius:14px; object-fit:cover; aspect-ratio:4/3; box-shadow:0 4px 32px rgba(0,0,0,0.1); }
.mission-h2 { font-size:clamp(1.8rem,3.5vw,2.5rem); font-weight:800; color:var(--text); line-height:1.2; letter-spacing:-0.02em; margin-bottom:20px; }

/* ============================================================ ZA KOGA */
.audience-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.acard {
  background:#fff; border:1.5px solid var(--line); border-radius:14px;
  overflow:hidden; transition:all 0.3s;
}
.acard:hover { border-color:rgba(124,58,237,0.3); box-shadow:0 8px 32px rgba(124,58,237,0.1); transform:translateY(-4px); }
.acard-top { padding:28px 24px; }
.acard-icon {
  width:52px; height:52px; background:#f3f0ff; border-radius:12px;
  display:flex; align-items:center; justify-content:center; margin-bottom:16px;
}
.acard-title { font-size:0.78rem; font-weight:800; letter-spacing:0.1em; color:var(--text); margin-bottom:10px; }
.acard-desc  { font-size:0.82rem; color:var(--sub); line-height:1.65; }
.acard-img   { height:180px; background-size:cover; background-position:center; position:relative; }
.acard-overlay {
  position:absolute; inset:0;
  background:rgba(4,5,26,0.65);
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; font-weight:800; color:#fff; letter-spacing:0.05em;
  text-align:center; line-height:1.3; padding:16px;
}

/* ============================================================ KORACI */
.steps-row { display:flex; align-items:flex-start; justify-content:center; gap:0; }
.step {
  flex:1; display:flex; flex-direction:column; align-items:center;
  text-align:center; padding:0 16px; position:relative;
}
.step-circle {
  width:44px; height:44px; border-radius:50%;
  background:var(--purple); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem; font-weight:700; margin-bottom:16px; position:relative; z-index:1;
}
.step-arrow {
  position:absolute; top:14px; left:calc(50% + 22px);
  width:calc(100% - 44px);
  display:flex; align-items:center;
}
.step:last-child .step-arrow { display:none; }
.step-icon {
  width:56px; height:56px; background:#f3f0ff; border-radius:14px;
  display:flex; align-items:center; justify-content:center; margin-bottom:14px;
}
.step strong { display:block; font-size:0.72rem; font-weight:800; letter-spacing:0.1em; color:var(--text); margin-bottom:8px; }
.step p { font-size:0.78rem; color:var(--sub); line-height:1.55; }

/* ============================================================ ZA KOMPANIJE */
.why-grid { display:grid; grid-template-columns:1fr 1fr; gap:80px; align-items:start; }
.why-h2 {
  font-size:0.8rem; font-weight:700; letter-spacing:0.2em;
  color:var(--sub); margin-bottom:32px;
}
.why-items { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:32px; }
.witem { display:flex; align-items:flex-start; gap:12px; }
.witem-icon {
  width:36px; height:36px; flex-shrink:0; background:#f3f0ff; border-radius:8px;
  display:flex; align-items:center; justify-content:center;
}
.witem strong { display:block; font-size:0.82rem; font-weight:700; color:var(--text); margin-bottom:3px; }
.witem p { font-size:0.76rem; color:var(--sub); line-height:1.55; }

.btn-partner {
  background:transparent; color:var(--purple);
  font-size:0.74rem; font-weight:700; letter-spacing:0.1em;
  padding:12px 24px; border-radius:6px;
  border:1.5px solid var(--purple); cursor:pointer; transition:all 0.25s;
}
.btn-partner:hover { background:var(--purple); color:#fff; }

.why-img-wrap { position:relative; border-radius:14px; overflow:hidden; }
.why-img { width:100%; object-fit:cover; aspect-ratio:4/3; display:block; }
.why-img-overlay {
  position:absolute; inset:0; background:rgba(4,5,26,0.6);
  display:flex; align-items:flex-end; padding:28px;
  font-size:1.4rem; font-weight:800; color:#fff; line-height:1.3;
}

/* ============================================================ ORGANIZATORI */
.orgs-row { display:flex; justify-content:center; gap:40px; flex-wrap:wrap; }
.org-card {
  display:flex; flex-direction:column; align-items:center; text-align:center;
  gap:12px; padding:32px 28px; background:#fff;
  border:1.5px solid var(--line); border-radius:14px; min-width:220px;
  transition:all 0.3s;
}
.org-card:hover { border-color:rgba(124,58,237,0.3); box-shadow:0 6px 24px rgba(124,58,237,0.08); }

.org-logo-wrap {
  width:140px; height:72px;
  border:1.5px solid var(--line); border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  overflow:hidden; padding:10px; background:#fafafa;
}
.org-logo-wrap img { max-width:120px; max-height:52px; width:100%; object-fit:contain; }
.org-logo-fallback {
  width:100%; height:100%; border-radius:50%;
  background:#f3f0ff; color:var(--purple);
  font-size:1.2rem; font-weight:800; align-items:center; justify-content:center;
}
.org-avatar {
  width:80px; height:80px; border-radius:50%;
  background:linear-gradient(135deg,var(--purple),#60a5fa);
  display:flex; align-items:center; justify-content:center;
  font-size:1.4rem; font-weight:800; color:#fff;
}
.org-name { font-size:0.8rem; font-weight:700; color:var(--text); line-height:1.4; letter-spacing:0.03em; }
.org-sub  { font-size:0.7rem; color:var(--muted); }
.org-badge {
  font-size:0.62rem; font-weight:700; letter-spacing:0.15em;
  background:#f3f0ff; color:var(--purple);
  padding:4px 12px; border-radius:100px;
}

/* ============================================================ CTA BANNER (TAMNO) */
#cta-banner {
  position:relative; overflow:hidden; padding:80px 48px;
}
.cta-bg {
  position:absolute; inset:0; background-size:cover; background-position:center;
}
.cta-overlay {
  position:absolute; inset:0; background:rgba(4,5,26,0.82);
}
.cta-inner {
  position:relative; z-index:1;
  max-width:1320px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap;
}
.cta-title {
  font-size:clamp(1.4rem,3vw,2rem); font-weight:800; color:#fff; line-height:1.3;
}
.cta-btns { display:flex; gap:12px; flex-shrink:0; flex-wrap:wrap; }
.btn-outline-dark {
  background:rgba(255,255,255,0.08); color:#fff;
  font-size:0.74rem; font-weight:700; letter-spacing:0.08em;
  padding:14px 26px; border-radius:6px;
  border:1.5px solid rgba(255,255,255,0.3); cursor:pointer; transition:all 0.25s;
}
.btn-outline-dark:hover { background:rgba(255,255,255,0.15); border-color:rgba(255,255,255,0.6); transform:translateY(-2px); }

/* ============================================================ FOOTER (TAMNO) */
footer {
  background:var(--dark); border-top:1px solid rgba(255,255,255,0.06); padding:32px 48px 20px;
}
.footer-inner {
  max-width:1320px; margin:0 auto;
  display:flex; align-items:center; justify-content:space-between; gap:24px;
  padding-bottom:20px; border-bottom:1px solid rgba(255,255,255,0.06); flex-wrap:wrap;
}
.footer-logo-wrap { display:flex; align-items:center; gap:10px; text-decoration:none; }
.footer-logo-top  { display:block; font-size:0.75rem; font-weight:800; letter-spacing:0.08em; color:#fff; }
.footer-logo-bot  { display:block; font-size:0.68rem; font-weight:500; color:rgba(255,255,255,0.4); }

.footer-socials { display:flex; gap:8px; }
.fsoc {
  width:36px; height:36px; background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08); border-radius:8px;
  display:flex; align-items:center; justify-content:center;
  color:rgba(255,255,255,0.45); text-decoration:none; transition:all 0.25s;
}
.fsoc:hover { background:rgba(124,58,237,0.2); border-color:rgba(124,58,237,0.4); color:#fff; }

.footer-contact { display:flex; flex-direction:column; gap:6px; align-items:flex-end; }
.fcontact {
  display:flex; align-items:center; gap:6px;
  font-size:0.78rem; color:rgba(255,255,255,0.5);
  text-decoration:none; transition:color 0.25s;
}
.fcontact:hover { color:#fff; }

.footer-copy {
  max-width:1320px; margin:16px auto 0;
  font-size:0.72rem; color:rgba(255,255,255,0.25); text-align:center;
}

/* ============================================================ BACK TO TOP */
#back-to-top {
  position:fixed; bottom:30px; right:30px; z-index:5000;
  width:44px; height:44px; border-radius:50%;
  background:var(--purple); color:#fff;
  border:none; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 4px 20px var(--purple-glow);
  opacity:0; transform:translateY(16px) scale(0.85); pointer-events:none;
  transition:opacity 0.3s, transform 0.3s;
}
#back-to-top.visible { opacity:1; transform:translateY(0) scale(1); pointer-events:auto; }
#back-to-top:hover   { box-shadow:0 6px 28px rgba(124,58,237,0.55); transform:translateY(-3px) scale(1.05); }

/* ============================================================ REVEAL */
.reveal { will-change:opacity,transform; }

/* ============================================================ RESPONSIVE */
@media (max-width:1024px) {
  .mission-grid { grid-template-columns:1fr; gap:40px; }
  .why-grid     { grid-template-columns:1fr; gap:40px; }
  .steps-row    { flex-wrap:wrap; gap:32px; }
  .step-arrow   { display:none; }
  .step         { width:calc(50% - 16px); flex:none; }
}

@media (max-width:900px) {
  nav,nav.scrolled { padding-left:24px; padding-right:24px; }
  .nav-links,.btn-nav { display:none; }
  .mob-btn { display:flex; }
  .hero-inner { padding:40px 24px; margin-left:0; max-width:100%; }
  .audience-grid { grid-template-columns:1fr; }
  .wrap { padding:60px 24px; }
  #cta-banner { padding:60px 24px; }
  footer { padding:28px 24px 16px; }
}

@media (max-width:640px) {
  .why-items { grid-template-columns:1fr; }
  .orgs-row  { flex-direction:column; align-items:center; }
  .cta-inner { flex-direction:column; }
  .footer-inner { flex-direction:column; align-items:center; text-align:center; }
  .footer-contact { align-items:center; }
  .steps-row { flex-direction:column; align-items:center; }
  .step { width:100%; max-width:280px; }
}

/* ============================================================ KONTAKT SEKCIJA */
.sec-kontakt {
  position: relative;
  background: var(--dark);
  padding: 100px 0;
  overflow: hidden;
}
.kontakt-glow-bg {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 50%, rgba(124,58,237,.18) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 50%, rgba(124,58,237,.12) 0%, transparent 70%);
}
.kontakt-header {
  text-align: center;
  margin-bottom: 56px;
}
.kontakt-h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-top: 12px;
}
.text-purple-light { color: var(--purple-light); }
.kontakt-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}
.kontakt-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 44px;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(124,58,237,.25);
  border-radius: 20px;
  min-width: 230px;
  text-align: center;
  transition: all .3s;
  backdrop-filter: blur(8px);
}
.kontakt-card:hover {
  background: rgba(124,58,237,.1);
  border-color: rgba(124,58,237,.6);
  box-shadow: 0 0 32px rgba(124,58,237,.2);
  transform: translateY(-4px);
}
.kontakt-card--main {
  background: rgba(124,58,237,.12);
  border-color: rgba(124,58,237,.4);
}
.kontakt-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(124,58,237,.2);
  border: 1px solid rgba(124,58,237,.3);
  display: flex; align-items: center; justify-content: center;
}
.kontakt-label { font-size: .68rem; font-weight: 700; letter-spacing: .14em; color: var(--purple-light); }
.kontakt-val { font-size: .95rem; font-weight: 600; color: #e2e8f0; text-decoration: none; line-height: 1.5; }
.kontakt-val:hover { color: var(--purple-light); }
.kontakt-bubbles { display: flex; gap: 8px; margin-top: 4px; }

/* ============================================================ MESSAGING BUBBLES */
.fcontact-bubbles {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}
.bubble-wa, .bubble-viber {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-decoration: none;
  transition: opacity .2s;
}
.bubble-wa    { background: #25D366; color: #fff; }
.bubble-viber { background: #7360f2; color: #fff; }
.bubble-wa:hover, .bubble-viber:hover { opacity: .85; }

/* ============================================================ POWERED BY */
.powered-by-wrap {
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
}
.powered-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--muted);
}
.powered-main-logo img {
  height: 52px;
  width: auto;
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter .2s;
}
.powered-main-logo:hover img { filter: none; }
.powered-logos {
  display: flex !important;
  flex-wrap: wrap !important;
  justify-content: center !important;
  align-items: center !important;
  gap: 24px 36px;
  width: 100%;
}
.powered-logo-link {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 120px;
  height: 50px;
  flex-shrink: 0;
}
.powered-logo-link img {
  height: 40px !important;
  width: auto !important;
  max-width: 110px !important;
  max-height: 40px !important;
  object-fit: contain !important;
  filter: grayscale(60%) opacity(.7);
  transition: filter .2s;
}
.powered-logo-link:hover img { filter: none; }

/* ============================================================ SCROLLBAR */
::-webkit-scrollbar { width:4px; }
::-webkit-scrollbar-track { background:var(--dark); }
::-webkit-scrollbar-thumb { background:var(--purple); border-radius:2px; }